I know this post is old, however hopefully this will help.
When I was diagnosed with Addisons in 1992, I also had a hypothyroid or Hashimotos syndrome. Once I was stable with all of my medications, I resumed a normal physically active life. I did have to work out harder at first, but eventually continued at my normal life weight of 125. Now I am 39. I stopped working out and got comfortable and put on 40 lbs!!! Going back to the gym was the hardest thing ever to do. But now I am strengthening again and slowy losing weight. I have good days and sometimes I have very tired days. It is hard but I push through it. i have been pushing hard for 2 months now and I feel so much better!
As for carbs. The reason most of us have a problem with carbs is because of a celiac sprue. this is common in Addison’s patients because we have an autoimmune disease and this is an autoimmune disease as well. you have a few options: Dont eat carbs, or figure out which ones really cause your system to go crazy. When I was young, carbs did not bother me. Now that I am pushing 40, I am finding that they do. Certain ones make me bloated, my stomach hurts bad, I feel so tired and crappy after. I am getting to know which ones these are. Now that I know I am not going crazy, and I do NOT want to go gluten free, I just indulge once in a while. When I have a sandwich from say Subway, the breads do not seem to bother me. So I enjoy that if I need my “bread” fix :).
the best advice I can give any and all of you. Go to the gym. Start moving your body. It WILL suck the first month, but I PROMISE, you will start feeling so much better and your better days will be more frequent then the bad ones. I have had more constant energy and my body is changing back to one that I can look in the mirror again and be happy.